A laser generation importing device applied to the human body includes a tunable laser device, wherein the tunable laser device includes a semiconductor chilling plate which is capable of adjusting temperature, the semiconductor chilling plate is provided with a laser emission array, and the laser emission array includes multiple independent laser units which are capable of emitting different wavelengths. Large-scale wavelength adjustment is realized through time division multiplexing and switching of operating laser units. Precision adjustment of wavelengths is realized through the semiconductor chilling plate. A broad-spectrum continuous tunable characteristic of wavelengths is further realized. The laser emitted by multiple laser units in the laser emission array is output in a beam-combining and coupling manner through multiple optical fibers. Therefore, the invention is compact in structure, high in reliability, convenient in use and capable of satisfying the demands on tunable laser units in such fields as biology and medical treatment.
